US 11,052,580 B2
Method for producing a soundproofing trim panel for the interior of a motor vehicle
Dominique Lemaire, Villiers devant le Thour (FR); Guillaume Crignon, Sillery (FR); and Christophe Capron, Epoye (FR)
Assigned to TREVES PRODUCTS, SERVICES & INNOVATION, Paris (FR)
Appl. No. 16/93,311
Filed by TREVES PRODUCTS, SERVICES & INNOVATION, Paris (FR)
PCT Filed Mar. 9, 2017, PCT No. PCT/FR2017/050535
§ 371(c)(1), (2) Date Oct. 12, 2018,
PCT Pub. No. WO2017/178717, PCT Pub. Date Oct. 19, 2017.
Claims priority of application No. 1653229 (FR), filed on Apr. 12, 2016.
Prior Publication US 2019/0126518 A1, May 2, 2019
Int. Cl. B29C 43/20 (2006.01); B32B 5/18 (2006.01); B29B 17/00 (2006.01); B32B 27/06 (2006.01); B60R 13/08 (2006.01); B29C 43/00 (2006.01); B32B 5/16 (2006.01); B32B 5/02 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 5/24 (2006.01); B32B 5/22 (2006.01); B29C 44/08 (2006.01); B29C 44/12 (2006.01); B32B 7/04 (2019.01); D04H 1/542 (2012.01); D04H 13/00 (2006.01); B29C 51/14 (2006.01); G10K 11/168 (2006.01); B32B 27/14 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); B62D 65/14 (2006.01); B29K 105/04 (2006.01); B29K 105/26 (2006.01); B29K 105/12 (2006.01); B29L 31/30 (2006.01); B29K 75/00 (2006.01); B29K 105/00 (2006.01)
CPC B29C 43/203 (2013.01) [B29B 17/0042 (2013.01); B29C 43/003 (2013.01); B29C 44/08 (2013.01); B29C 44/1209 (2013.01); B29C 51/14 (2013.01); B32B 5/022 (2013.01); B32B 5/16 (2013.01); B32B 5/18 (2013.01); B32B 5/22 (2013.01); B32B 5/245 (2013.01); B32B 7/04 (2013.01); B32B 27/065 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/14 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); B60R 13/08 (2013.01); B60R 13/0815 (2013.01); B62D 65/14 (2013.01); D04H 1/542 (2013.01); D04H 13/00 (2013.01); G10K 11/168 (2013.01); B29K 2075/00 (2013.01); B29K 2105/04 (2013.01); B29K 2105/12 (2013.01); B29K 2105/251 (2013.01); B29K 2105/26 (2013.01); B29K 2995/0002 (2013.01); B29K 2995/0063 (2013.01); B29L 2031/3005 (2013.01); B29L 2031/3041 (2013.01); B32B 2250/03 (2013.01); B32B 2250/04 (2013.01); B32B 2250/24 (2013.01); B32B 2250/40 (2013.01); B32B 2255/02 (2013.01); B32B 2255/10 (2013.01); B32B 2255/102 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/12 (2013.01); B32B 2264/10 (2013.01); B32B 2264/104 (2013.01); B32B 2266/0278 (2013.01); B32B 2272/00 (2013.01); B32B 2274/00 (2013.01); B32B 2305/70 (2013.01); B32B 2307/102 (2013.01); B32B 2307/51 (2013.01); B32B 2307/718 (2013.01); B32B 2307/72 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/732 (2013.01); B32B 2307/734 (2013.01); B32B 2307/738 (2013.01); B32B 2471/02 (2013.01); B32B 2605/00 (2013.01); B32B 2605/003 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for producing a soundproofing trim panel for the interior of a motor vehicle, the method comprising the following steps:
providing an elastically compressible lower layer, the layer being able to be shaped by heating in such a way as to be able to adopt a stable geometry after shaping,
heating the lower layer and placing in a mould such as to shape it to form a spring layer of a spring-mass type insulation system,
associating the lower layer with an upper layer forming the mass of the spring-mass system, the upper layer being of a sealed or porous nature and associated with a sealing layer arranged between the upper and lower layers,
the method being wherein:
the lower layer is made from a blend of elastically compressible foam flakes, the flakes being from recycling,
the flakes form at least 80% by weight of the lower layer,
the flakes are mixed with binder fibres, the fibres comprising a core, and a sheath that is fusible at a moderate temperature, the flakes being bonded to one another by means of the fusing of the sheath forming a binder, such that the lower layer takes the form of a bonded foam.